CN109268955B - Modular self-adaptive pre-dehumidification type capillary network radiation air conditioning system and method - Google Patents

Modular self-adaptive pre-dehumidification type capillary network radiation air conditioning system and method Download PDF

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CN109268955B
CN109268955B CN201810877924.8A CN201810877924A CN109268955B CN 109268955 B CN109268955 B CN 109268955B CN 201810877924 A CN201810877924 A CN 201810877924A CN 109268955 B CN109268955 B CN 109268955B
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capillary network
dehumidification
modular
temperature
air
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CN109268955A (en
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王赞社
顾兆林
冯诗愚
高秀峰
李云
罗昔联
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Xi an Jiaotong University
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Xi an Jiaotong University
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/1411Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
    • F24F3/1417Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant with liquid hygroscopic desiccants
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0089Systems using radiation from walls or panels

Abstract

The invention discloses a modular self-adaptive pre-dehumidification type capillary network radiation air conditioning system and a method, which comprises a modular pre-dehumidification system I, a capillary network radiation system II and a self-adaptive measurement and control system III, wherein the self-adaptive measurement and control system III is used for controlling the circulation quantity of the modular pre-dehumidification system I and adjusting the temperature of a capillary network water inlet of the capillary network radiation system II so as to realize the radiation air adjustment of the modular self-adaptive pre-dehumidification type capillary network. The modular pre-dehumidification system firstly carries out membrane dehumidification on wet air by utilizing the modular combination of the multi-path membrane modules; the capillary network radiation air-conditioning system is used for adjusting the indoor temperature; the self-adaptive measurement and control system provides flow control and regulation basis for the modular pre-dehumidification system by measuring indoor temperature and humidity and the temperature of the water inlet of the capillary network. Finally, the surface of the capillary network does not have dew condensation while the indoor humidity and temperature are adjusted.

Description

Modular self-adaptive pre-dehumidification type capillary network radiation air conditioning system and method
Technical Field
The invention belongs to the technical field of building indoor air temperature and humidity regulation, and particularly relates to a modular self-adaptive pre-dehumidification type capillary network radiation air conditioning system and method.
Background
In the building environment, temperature and humidity are the main evaluation indicators of human thermal comfort. In China, although the climate has diversity, most areas are in high-temperature and high-humidity conditions in summer, so that the temperature and humidity control of the hot and humid areas is always the key point of air conditioning.
In air conditioning, temperature and humidity are undoubtedly the two most important parameters, however, since water vapor exists in the air in the form of mixture, the temperature and humidity parameters are in a coupled state, and the temperature and humidity are regulated together by the conventional air conditioning system, such as the condensation dehumidification form of a common air conditioner, in which the surface temperature of the air conditioning evaporator is far lower than the dew point temperature of the air, and condensed water is generated continuously. The unordered emission of comdenstion water can influence the outward appearance of building on the one hand, causes environmental pollution, and on the other hand, because the temperature of comdenstion water is lower, direct emission also causes the direct waste of cold source energy. Meanwhile, the energy efficiency of the air conditioning system is reduced due to the low temperature of the evaporator.
From the perspective of human thermal comfort, excessive humidity can cause a feeling of body stuffiness, and decreasing humidity can increase human thermal comfort.
It is noted that the low temperature air supply of the conventional air conditioning system brings a blowing feeling to the human body, causing discomfort or even "air conditioning sickness".
The capillary network air conditioning system is the tail end of a novel energy-saving air conditioning system appearing in recent years, and has the characteristics of high comfort, no noise, energy conservation, low-temperature difference driving, flexible arrangement, low-grade energy utilization and the like. Especially, the characteristic of no blowing feeling can greatly improve the comfort of the air-conditioned room. However, the biggest defect of the capillary network radiation system in summer is that the surface of the capillary network is easy to condense, and the operation efficiency of the system is greatly influenced.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a modular self-adaptive pre-dehumidification type capillary network radiation air-conditioning system method based on the thought of independent temperature and humidity control, which utilizes the characteristic that membrane components are easy to combine to form a module, and uses the membrane dehumidification performance of the membrane components to construct a modular pre-dehumidification system; secondly, constructing a capillary network radiation air-conditioning system by utilizing the characteristics of low temperature difference driving, no blowing feeling, energy conservation and comfort of the capillary network, and adjusting the indoor temperature; and finally, performing signal processing by using a temperature sensor at the water inlet of the capillary network and a temperature and humidity sensor of an indoor air conditioner to control the regulation of the flow of the solution at the inlet of the membrane component, so that the phenomenon of condensation on the surface of the capillary network is avoided. On one hand, the independent control of indoor temperature and humidity is realized, and on the other hand, the indoor thermal comfort and the efficient operation of the system are greatly improved.
The invention is realized by the following technical scheme.
The utility model provides a modular self-adaptation pre-dehumidification type capillary network radiation air conditioning system, includes modular pre-dehumidification system I, capillary network radiation system II and self-adaptation system III of observing and controling, wherein:
the modular pre-dehumidification system I comprises a solution reservoir and a multi-path membrane module which is circularly communicated with the solution reservoir; the indoor air feeder is arranged on the side surface of the multi-path membrane component;
the capillary network radiation system II comprises a cold water tank and a capillary network which is circularly communicated with the cold water tank;
the self-adaptive measurement and control system III comprises a sensor assembly, an indoor air temperature and humidity sensor and a capillary network water inlet temperature sensor; the sensor assembly is respectively connected with the flow regulators of the multi-path membrane assembly through the sensor signal processor and is connected with the capillary network circulating pipeline through the temperature sensor at the water inlet of the capillary network;
the circulation volume of the modular pre-dehumidification system I is controlled by the adaptive measurement and control system III, and the temperature of the water inlet of the capillary network radiation system II is adjusted, so that the radiation air adjustment of the modular adaptive pre-dehumidification capillary network is realized.
With respect to the above technical solutions, the present invention has a further preferable solution:
preferably, the multi-path membrane modules of the modular pre-dehumidification system I are communicated in parallel, and are communicated with the solution cooler, the solution pump and the solution reservoir through pipelines to form a circulation pipeline.
Preferably, the flow regulators are placed on top of the multi-path membrane module, each flow regulator being connected to a sensor signal processor.
Preferably, the solution reservoir is communicated with a solution regenerator.
Preferably, the capillary pipe network comprises a main pipe which is longitudinally distributed and a plurality of branch pipes which are transversely distributed and communicated with the main pipe, and the main pipe is communicated with the water cooler, the cold water tank and the water pump through pipelines to form a circulating pipeline.
The invention further provides a method for carrying out modular adaptive pre-dehumidification type capillary network radiation air conditioning by using the system, which comprises the following steps:
1) firstly, starting an indoor air feeder and a solution pump, and opening all flow regulators to pre-dehumidify indoor air of the system;
2) the dehumidifying solution in the solution reservoir flows into the inner side of the multi-path membrane component, and flowing wet air flows outside the multi-path membrane component;
3) the indoor air blower uniformly delivers air to the surface of each path of membrane component in the multi-path membrane components, and water vapor in the air is diffused to the inner side of the membrane on the surface of the multi-path membrane component and is absorbed by the solution to form a membrane for dehumidification;
4) the inlet of each membrane module in the multi-channel membrane modules is provided with a flow regulator, and a sensor signal processor acquires a flow signal of the modular pre-dehumidification system I and transmits the flow signal to the sensor module;
5) simultaneously, starting a water pump, and starting a capillary network radiation system II to start circulation;
6) the sensor signal processor starts to adjust the flow of the flow regulator according to the temperature sensor at the water inlet of the capillary network and the indoor air temperature and humidity sensor, and the air after being subjected to membrane dehumidification does not have dew condensation on the surface of the capillary network.
Preferably, the sensor signal processor is internally provided with a control algorithm of a capillary network water inlet temperature sensor, an indoor air temperature and humidity sensor and a flow regulator, so that the dew point temperature of air passing through the modular pre-dehumidification system I is 3-5 ℃ lower than the water inlet temperature of the capillary network.
Preferably, the sensor signal processor controls the flow regulator according to a signal of the temperature sensor at the water inlet of the capillary network and a signal of the indoor air temperature and humidity sensor.
Preferably, the method for controlling the flow regulator by the sensor signal processor comprises the opening and closing mode of the flow regulator or the different opening degree adjustment of the flow regulator, so as to realize the modular pre-dehumidification function.
Preferably, when the opening and closing mode of the flow regulator is adopted for regulation, the number N of the flow regulator openings is as follows:
wherein:
wherein a and b are coefficients, respectively, and a is 0.1 to 0.3; b is 0.001 to 0.003; n is the number of the flow regulators started; t is t14The temperature measured by an indoor air temperature and humidity sensor is DEG C; dbIs t14Saturated moisture content at temperature, g/kg. dry air; Δ t is t14And the difference between the corresponding air dew point temperature and the water inlet temperature of the capillary network, | delta t | ═ 3-5 ℃.
Compared with the prior art, the invention adopts the modularized membrane component to carry out pre-dehumidification to realize the adjustment of humidity, adopts the capillary network radiation air-conditioning system to adjust the indoor temperature, and adopts the self-adaptive measurement and control system to control the operation of the modularized membrane component. The problem of condensation on the surface of the capillary network is solved while independent temperature and humidity control is realized. Because the capillary network radiation air-conditioning system is adopted, the indoor thermal comfort is greatly improved, and the energy-saving characteristic of the system is also improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention:
FIG. 1 is a structural flow and schematic diagram of the present invention.
Detailed Description
The present invention will now be described in detail with reference to the drawings and specific embodiments, wherein the exemplary embodiments and descriptions of the present invention are provided to explain the present invention without limiting the invention thereto.
Referring to fig. 1, a modular adaptive pre-dehumidification type capillary network radiation air conditioning system includes a modular pre-dehumidification system I, a capillary network radiation system II, and an adaptive measurement and control system III.
Wherein: the modular pre-dehumidification system I consists of a multi-path membrane module 1, a solution reservoir 2, a solution pump 3, a solution cooler 4, a flow regulator 5, an indoor blower 6 and a solution regenerator 7. The plurality of multi-path membrane modules 1 are communicated in parallel and are communicated with the solution cooler 4, the solution pump 3 and the solution reservoir 2 through pipelines to form a circulating pipeline. The solution reservoir 2 is communicated with a solution regenerator 7. And the inlet of each membrane module in the multi-path membrane module 1 is provided with a flow regulator 5, and each flow regulator 5 is connected to a sensor signal processor 15 of the self-adaptive measurement and control system III.
Wherein: the capillary network radiation system II consists of a capillary network 8, a water pump 9, a cold water tank 10 and a water cooler 11. The capillary network 8 comprises a main pipe which is longitudinally distributed and a plurality of branch pipes which are transversely distributed and communicated with the main pipe, and the main pipe is communicated with a water cooler 11, a cold water tank 10 and a water pump 9 through pipelines to form a circulating pipeline.
Wherein: the self-adaptive measurement and control system III is composed of a sensor component 12, a capillary network water inlet temperature sensor 13, an indoor air temperature and humidity sensor 14, a sensor signal processor 15 and a flow regulator 5. The sensor assembly 12 is respectively connected with the flow regulator 5 of the multi-path membrane assembly 1 through a sensor signal processor 15 and is connected with a circulating pipeline of a capillary network 8 through a capillary network water inlet temperature sensor 13; the circulation volume of the modular pre-dehumidification system I is controlled by the adaptive measurement and control system III, and the temperature of the water inlet of the capillary network radiation system II is adjusted, so that the radiation air adjustment of the modular adaptive pre-dehumidification capillary network is realized.
The dehumidifying solution flows inside the membrane module, the humid air flows outside the membrane module to form the membrane for dehumidification, and the dehumidifying amount of the membrane module is different when the solution flow rate in the membrane module is different.
The indoor blower 6 uniformly blows the indoor air to the surface of each of the multiple membrane modules 1, and the water vapor in the air is diffused to the inside of the membrane on the membrane surface of the membrane module and then absorbed by the solution to form membrane dehumidification.
The sensor signal processor 15 controls the flow regulator 5 according to the signal of the capillary network water inlet temperature sensor 13 and the signal of the indoor air temperature and humidity sensor 14.
The invention discloses a method for carrying out modular self-adaptive pre-dehumidification type capillary network radiation air conditioning by using the system, which comprises the following steps:
1) firstly, starting an indoor air feeder 6 and a solution pump 3, and opening a flow regulator 5 to pre-dehumidify the indoor air of the system;
2) the solution reservoir 2 is connected to a solution regenerator 7 so that the concentration in the solution reservoir 2 is always maintained as required for membrane dehumidification. The dehumidifying solution in the solution reservoir 2 flows into the inner side of the multi-path membrane module 1, and flowing wet air flows outside the multi-path membrane module 1;
3) the indoor blower 6 uniformly delivers the indoor air to the surface of each path of membrane module in the multi-path membrane module 1, and the water vapor in the air is diffused to the inner side of the membrane on the surface of the multi-path membrane module 1 and absorbed by the solution to form a membrane for dehumidification;
4) the inlet of each membrane module in the multi-path membrane module 1 is provided with a flow regulator 5, and a sensor signal processor 15 collects flow signals of the modular pre-dehumidification system I and transmits the flow signals to a sensor module 12; the sensor signal processor 15 controls the flow regulator 5 according to the signal of the capillary network water inlet temperature sensor 13 and the signal of the indoor air temperature and humidity sensor 14;
5) simultaneously, starting a water pump 9, starting a capillary network radiation air-conditioning system, and starting circulation of a capillary network radiation system II;
meanwhile, the sensor signal processor 15 starts to work, the flow of the flow regulator 5 starts to be regulated according to the capillary network water inlet temperature sensor 13 and the indoor air temperature and humidity sensor 14, and the sensor signal processor 15 is internally provided with a control algorithm of the capillary network water inlet temperature sensor 13, the indoor air temperature and humidity sensor 14 and the flow regulator 5, so that the dew point temperature of the air passing through the modular pre-dehumidification system I is guaranteed to be 3-5 ℃ lower than the water inlet temperature of the capillary network 8.
6) By controlling the circulation temperature in the capillary network, condensation does not occur on the surface of the capillary network 8 in the air dehumidified by the membrane.
The method for controlling the flow regulator 5 by the sensor signal processor 15 includes two methods, namely, the opening and closing mode of the flow regulator 5, and the different opening degree adjustment of the flow regulator 5, so as to realize the modular pre-dehumidification function.
When the opening and closing mode of the flow regulator is adopted for regulation, the quantity N of the opened flow regulators is as follows:
wherein:
wherein a and b are coefficients, respectively, and a is 0.1 to 0.3; b is 0.001 to 0.003; n is the number of the flow regulators started; t is t14The temperature measured by an indoor air temperature and humidity sensor is DEG C; dbIs t14Saturated moisture content at temperature, g/kg. dry air; Δ t is t14And the difference between the corresponding air dew point temperature and the water inlet temperature of the capillary network, | delta t | ═ 3-5 ℃.
By the system, the surface of the capillary network is not condensed, and the humidity is reduced to improve the comfort of an air-conditioned room.
While the invention has been described in further detail with reference to specific preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (7)

1. The utility model provides a modular adaptive pre-dehumidification type capillary network radiation air conditioning system which characterized in that, includes modular pre-dehumidification system (I), capillary network radiation system (II) and adaptive measurement and control system (III), wherein:
the modular pre-dehumidification system (I) comprises a solution reservoir (2) and a multi-path membrane module (1) which is circularly communicated with the solution reservoir (2); also comprises an indoor blower (6) arranged on the side surface of the multi-path membrane component (1);
the capillary network radiation system (II) comprises a cold water tank (10) and a capillary network (8) which is circularly communicated with the cold water tank (10);
the self-adaptive measurement and control system (III) comprises a sensor assembly (12), an indoor air temperature and humidity sensor (14) and a capillary network water inlet temperature sensor (13); the sensor assembly (12) is respectively connected with the flow regulator (5) of the multi-path membrane assembly (1) through a sensor signal processor (15) and is connected with a circulating pipeline of a capillary network (8) through a capillary network water inlet temperature sensor (13);
the circulation volume of the modular pre-dehumidification system (I) is controlled by the self-adaptive measurement and control system (III), and the temperature of the capillary network water inlet of the capillary network radiation system (II) is adjusted, so that the radiation air adjustment of the modular self-adaptive pre-dehumidification capillary network is realized;
the multi-path membrane modules (1) of the modular pre-dehumidification system (I) are communicated in parallel, and are communicated with the solution cooler (4), the solution pump (3) and the solution reservoir (2) through pipelines to form a circulating pipeline; the flow regulators (5) are arranged at the top of the multi-path membrane component (1), and each flow regulator (5) is connected to the sensor signal processor (15);
when the opening and closing mode of the flow regulator (5) is adopted for regulation, the quantity N of the opening of the flow regulator (5) is as follows:
wherein:
in the formula, a and b are coefficients respectively, and N is the number of opened flow regulators; t is t14The temperature measured by an indoor air temperature and humidity sensor is DEG C; dbIs t14Saturated moisture content at temperature, g/kg. dry air; Δ t is t14The difference between the corresponding air dew point temperature and the water inlet temperature of the capillary network.
2. The system according to claim 1, characterized in that said solution reservoir (2) is connected to a solution regenerator (7).
3. The system as claimed in claim 1, wherein the capillary network (8) comprises a main pipe and a plurality of branch pipes, wherein the main pipe is distributed longitudinally, the branch pipes are distributed transversely and communicated with the main pipe, and the main pipe is communicated with a water cooler (11), a cold water tank (10) and a water pump (9) through pipelines to form a circulation pipeline.
4. A method for performing modular adaptive pre-dehumidification type capillary network radiation air conditioning by using the system of any one of claims 1 to 3, comprising the following steps:
1) firstly, an indoor air feeder (6) and a solution pump (3) are started, a flow regulator (5) is completely opened, and pre-dehumidification of indoor air of the system is carried out;
2) the dehumidifying solution in the solution reservoir (2) enters the inner side of the multi-path membrane component (1) to flow, and flowing wet air is arranged at the outer side of the multi-path membrane component (1);
3) an indoor blower (6) uniformly sends air to the surface of each path of membrane component in the multi-path membrane component (1), water vapor in the air is diffused to the inner side of the membrane on the surface of the multi-path membrane component (1) and is absorbed by solution, and the membrane is formed for dehumidification;
4) the inlet of each membrane module in the multi-channel membrane module (1) is provided with a flow regulator (5), and a sensor signal processor (15) collects flow signals of the modular pre-dehumidification system (I) and transmits the flow signals to a sensor module (12);
5) simultaneously, starting a water pump (9), and starting a capillary network radiation system (II) to start circulation;
6) the sensor signal processor (15) starts to adjust the flow of the flow regulator (5) according to the temperature sensor (13) at the water inlet of the capillary network and the indoor air temperature and humidity sensor (14), and the air after being dehumidified by the membrane does not have dew condensation on the surface of the capillary network (8).
5. The method according to claim 4, characterized in that a capillary network water inlet temperature sensor (13), an indoor air temperature and humidity sensor (14) and a flow regulator (5) control algorithm are built in the sensor signal processor (15), so that the dew point temperature of the air passing through the modular pre-dehumidification system (I) is 3-5 ℃ lower than the water inlet temperature of the capillary network (8).
6. The method according to claim 4, characterized in that the sensor signal processor (15) controls the flow regulator (5) according to the signal of the capillary network water inlet temperature sensor (13) and the signal of the indoor air temperature and humidity sensor (14).
7. The method according to claim 4, characterized in that the method of controlling the flow regulator (5) by the sensor signal processor (15) comprises the opening and closing of the flow regulator (5) or the different opening adjustments of the flow regulator (5) to achieve a modular pre-dehumidification function.
CN201810877924.8A 2018-08-03 2018-08-03 Modular self-adaptive pre-dehumidification type capillary network radiation air conditioning system and method Active CN109268955B (en)

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CN101435608B (en) * 2008-12-25 2010-04-14 西安交通大学 Solution regenerative device of solution dehumidifying air-conditioning system
CN201827984U (en) * 2010-10-18 2011-05-11 郑州中南科莱空调设备有限公司 Central air-conditioning system of capillary network tail-end water source heat pump
CN102840634B (en) * 2011-06-24 2015-09-09 杭州三花研究院有限公司 A kind of air-conditioning system
KR20150009140A (en) * 2013-07-16 2015-01-26 김진만 Air control system
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